200021211210100 has 54 divisors (see below), whose sum is σ = 504910686024150. Its totient is φ = 68578700984640.

The previous prime is 200021211210059. The next prime is 200021211210109. The reversal of 200021211210100 is 1012112120002.

It can be written as a sum of positive squares in 3 ways, for example, as 308804712804 + 199712406497296 = 555702^2 + 14131964^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200021211210109) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 20410322775 + ... + 20410332574.

Almost surely, 2^{200021211210100} is an apocalyptic number.

200021211210100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200021211210100 is an abundant number, since it is smaller than the sum of its proper divisors (304889474814050).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

200021211210100 is a wasteful number, since it uses less digits than its factorization.

200021211210100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40820655377 (or 40820655363 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 200021211210100 its reverse (1012112120002), we get a palindrome (201033323330102).

The spelling of 200021211210100 in words is "two hundred trillion, twenty-one billion, two hundred eleven million, two hundred ten thousand, one hundred".